Arbiter Systems 1088A, Operation Manual

Page: 181 / 279

C.15 Option 19: Model 1088B Fault Relay 161
C.15 Option 19: Model 1088B Fault Relay
C.15.1 General Description
Option 19 for the Model 1088B Satellite-Controlled Clock incorporates a fail-safe single-pole,
double-throw (SPDT) relay into the Out-of-Lock function already available in the standard in-
strument. Relay activation is subject to the same user-configurable delay as the standard output;
thus it will occur at the same moment as the logic-level Out-of-Lock signal from the rear panel (if
so configured). Normally-open, normally-closed, and common connections are available at screw
terminals on the rear panel. “Normally” means the clock is operating without fault.
Figure C.17: Option 19 External Wired Fault Relay
C.15.2 Specifications
C.15.3 Relay Contacts
Type: Dry; gold-clad silver.
Contact Resistance: 60 milliohms
UL/CSA Ratings: 1 A @ 30 Vdc;
0.5 A @ 125 Vac
0.3 A @ 110 Vdc
C.15.4 Terminal Strip
Terminal Assignment: N.C./N.O./COM.
left to right, viewed from rear.
Block Size: 49-mm W x 15-mm H x 16.5-
mm D
(1.9: x 0.6 x 0.6)
Block Material: Glass-filled thermoplastic.
Screw Size: 6-32 x 1/4”
Screw Material: Cadmium-plated steel.